Pressure regulating valve



Oct. 31, 1939. w. CZARNECKI 7 3 w PRESSURE REGULATING VALVE Original Filed March 26, 1937 INVENTOR. M175? CZAZ/VPCK/ 150 with a degree of: nic'ety'heretoforeunattalned'to wherein:-

Patented Qet. 3 1,19 1' I proper pressure is deliveredto' the burner nozzle; This application is a divisionof the copending application 1 of .-Walter .Czarnecki, Serial No.

I supply-unit.

back to the source hijsupply.) A 'valvejisassociated-with' the port to the: burner. which ordinat i 11y re nains closed but-which is affected by pres- 'ur sureithatis builtlgup in the valve to Open when a.

.1 j predetermined; pressure is reached" Th'ep'ort to l the; bypass is also normallyclosed by a valve but '2 this 'valve' -is' aIso-opendwhenja 'fpi'edeterinincd pressure, usually greater'than that. at which oil any the-fuel I :is; delivered tolt 5 11 yarythe pressure at which fiuidlwill.bebypassed cback" to the sourceoffsiipply.

v Particular features. and :objects'ioi rthein'venx tio'n'are associatedwithitheprovisionoi. a novel- ,type of valve assembly for controlling-the -byv v passingoif thduel backto" the sourceof supply; These and other; ;;nor e" de'tailedobjects and ad? vantagesi williinipart becomeapparentfandr in v I are ,deslgned-to'accoxnmodate headed bolts in o t partQbeJhereinafterstatedfl' V a The invention, therefore-,gcomprises a pressure regulating" valv fe including a valve "casing which i 'r'jjis rer mee'wnhanumer port and a bypass'port, I

andnovel valve assemblies associated and operi'n'g description" ndi a com a yi ei win Figure, ,1 weaned; j through a pressure regulating ,valve. inside. in, accordance withthe prec'eptsfloffthisinvention;

v 1 Fige' 2 is anrenlarged det" iled view partly section and-partly inrelevationoi one'modifica-x a 5 blewithin the'easing to control'the'burner and bypass ports. I: I Fora'full-and-more complete understanding-of ."the invention reference, may be had'to the follow;

'iil 'lalzza -i I waltergCiarnecki; Edding'ton; 1a.; sin er to as;

jdingtonMetal Specialty-'00.," Eddington, Pa a ,afirmeornposed of WalterCz'arneckl, @812, Mary a V Czarnecki; Nellie Wojsows ki; ;wcslcy- Czar- .necki, stanleyjczarnecki', Walter V. Omrn'ecki, j Jr, v v r amilication meme,- 1931,.su'm No. 5 l. z 133;131.' =Divid ed and this application October 1 9 ?v "elam. e i I H H H .r sjclaimsl- -(ci'.192F153)- This; invention- ,i'ela'tes to pressure] regulating valvessuch-as are commonly employed in connec tion withoilburnersfto insureithat'fuel underfa tion winch r'nayrbe' carried out at thevalvelocated at the burner port,

I'Qright angIes' to, thes howing ofjflgure 3, ofj'the j valve member'ofthe'latter,

; Figure 5 is an end' elevation'al snowing similar to Figure 3 of a slightly modified 'form of valve 10 Figure G'isa'side viwpartly in section and partly'in elevation of the valve 'inembershowm Figure 7 is a detailed showing ofthe -15 rhemberp'er see" which ishrought out in Figure 2.-

Inthislviewa certain part of thevalve member 1 f is broken away and shown in section to clearly.

bring out' the construction thei{eof."

A .Iteferring now to the drawlng, wherein -like 2 I fr'eference, characters denote corresponding parts,

the pressure regulatingjvalve' shown in Figure li's 7 shown as comprising p' a main body portion in the iorrn; oi a casing C, which casing-15o! a, 1101- low construction so asfto'ihou's' the various valve parts. At one end'thecasingCisprovidedwith a threaded T opening designated l0, and atthe; l positel'end with another threaded opening'l lhj A passageway 12' is formed inla sidewall of the casing Qfand constitutes means'ior establish- I ing communication between the, interior '101' the casing Cfand a suitable source'otjfuel supply, 7

which may be a fuel supply unit'such as shown inQthe' copending. application above identified; an oil pump, or any other m'e'ansior supplying fluid.- fuel "under pressure. I v The casingC is formed-with a flange 13 that .surrounds the passageway l 2,an'd thisflange isprovided with a plurality of bolt holes 14 which securing the press'ureregulating valve as an en--;

' tirety in position," as is clearly brought out in the copending application/above identified.

Screwed into thethr'eaded opening I0 is a plug member l5 which is formed with ,a threaded 5 socket l6; this socket I being designed to have connected theret'oa-suitable conduit which leads to an oil burner. Theplug m'ember' I5 is also Viorine'd withjanextensionv 1 1 which projectsinto the hollow casing C, and this plug extension I! is 50 a provided with a cylindrical socket l8 which slidably receivesa-valve member I 9.; A passageway 20 connectsthe sockets l6 and I8, and establishes communication therebetween." Speaking! with: respect to the of the, socket I3, the wall of the plug extension i1 is provided with a plurality of radially extending openings 2| which may be of any desired number, such as four in the illustrated embodiment.

The valve member I9 is formed with a conical tip 22 which when fitted in the extremity of the passageway serves to seal the same, and cut oil communication to the oil burner. However, when the valve member i3 has slid in the socket l3, to unseat the conical tip 22 from the extremity of the passage 20, communication from the interior of the casing C through the passageways 2| to the passage 20 and socket I6 is established.

A piston element designated 23 is shown as slidable in a cylindrical portion of the casing C, which cylindrical portion is designated 24. In order to establish a properly effective seal between the piston 23 and the cylindrical part 24 of the casing C a packing element is shown at 25 as being held in position by a ring 26.which may be placed around a reduced cylindrical part 21 of the piston 23.

Extending upwardly from the reduced portion 21 of the piston 23 is a spherical-like projection 23 formed with a socket 29 which receives a complementally spherically shaped member 33 formed on the valve member IS.

A coil spring designated 3| engages the piston 23 at one end, and at the other end is received in a seat32 which is formed in an end closure 33 that is screwed into the threaded opening I I. It. is evident that the spring 3| normally urges the piston 23 upwardly (speaking with reference to the showing of Figure 1) and thus maintains the conical tip 22 of the valve member l9 seated in the valve seat defined by the end of the passage 23. However, when sufiicient pressure has been built up in the fluid within the casing C above the piston 23 the latter will be moved downwardly against the influence of the spring 3| to unseat the conical tip 22 of the valve member I! from the end of the passage 23.

Just beneath the spherical projection 23 the reduced portion 21 of the piston 23 is provided with a plurality of radially disposed passageways 34, which may be of any desired number, as the four illustrated in the drawing. These passageways 34 intercept centrally of the piston, and,

communicating therewith is a central passage 35 that extends axially of the piston 23. This passageway 35 opens into a cup-like depression 33 which is formed in the piston 23.

A housing member 31 has one end received in the cup-like depression 36, and this end of the housing 31 is formed with an end structure referred to in its entirety as 33. This end structure 33 includes a recess 33 into which opens the passage 35. Extending from the recess 39 into the interior of the housing 31 are a plurality of longitudinally extending passages 43. The central part of the end structure 33 is formed with the recess 4|, the edge of which constitutes a valve seat in a manner to be hereinafter described.

At this point it is well to note that the housing 31 is provided with a plurality of openings 42 in the walls thereof, and which openings 42 establish communication between the interior of the housing 31 and the interior of the casing C thereabout.

A'valve member 43 is slidably positioned in the housing 31, and at its upper end is formed with a truncated conical projection 44. This conical projection 44 is provided with a cross cut or kerf designated 45. This cross cut or kerf 45 opens on each side of the conical projection 44. The valve member 43 is provided with a central passageway 46 that communicates with the crosscut 45. A coil spring 41 has one end fitted about a projection 43 formed on the valve member 43, and the other end of the spring 41 is fitted about a projection 43 that is formed on a backing member 53. 'This backing member 50 bears against a threaded stem 5| that is screwed into a plug member 52 which is threaded into the end of the housing 31 that is threaded as shown at 53. It is evident that the threaded stem 5| may be rotated to adjust the tension afforded by the spring 41.

When the valve member 43 is urged upwardly by the spring 41 so that the truncated conical extension 44 engages the edge of the valve seat 4|, the cross cut 45 will be almost, but not quite, entirely closed, providing just suflicie nt' opening therethrough to allow a so-called bleeding action, which is desirable in pressure valves of this type. This bleeding action of the fluid is through the openings 42 to the bypass port shown at 54. The bypass port 54 communicates with a threaded socket 55 which may have connected thereto a suitable conduit constituting the bypass back to the source of fuel supply.

However, when sufiicient pressure is built up on the fluid passing through the passages 34, 35. 39 and 40 the valve member 43 will be affected by the built up pressure to be moved against the influence of the spring 41 to open up communication between the passages 40 and 46, and thereby provide an adequate bypassing of fluid through the bypass port 54.

It is notable that the housing 31 moves with the piston 23, and this housing 31 is formed with a shoulder at 56 which serves to limit movement of the piston 23. Obviously when the shoulder 56 engages the edge of the bore 51 which is formed in the end closure 33, further movement of the piston 23 in a downward direction is inhibited.

The bore 51 in the end closure 33 is enlarged and threaded as shown at 53, and screwed thereinto is a cap member 53 having a cup-like recess 63 which accommodates the threaded stem 5|.

Referring now more particularly to Figures 5 and 6, a modified form of sliding valve is shown, and which is intended to replace the valve member 43 of Figures 3 and 4. In this modification the valve member 43 is replaced by a cup-like valve member 6| having a recess 52 which receives one end of the spring 41; the longer passage 46 being replaced by the central passage 63.

When the pressure regulating valve illustrated in Figure 1 is installed in a position which is inverted from that shown there may be a tendency for sediment ,-to collect in the passages 2|. In order to avoid any possibilityof such sediment collection interfering with the proper operation of the valve I3 at the burner port a somewhat modified form of valve may be used at this point such modification being brought out in Figures 2 and '1. In this form the plug extension I1 is not formed with the radial passages 2|, but the socket l3 receives a valve member 64, the cylindrical walls of which are provided with a plurality of cuts or kerfs 55. These cuts 65 establish communication between the interior of the casing C and the passage 20 when the valve member 34 is unseated from the valve seat defined by the passage 23.

While preferred specific embodiments of the invention are hereinbefore set forth it is to be clearly understood that I am not to be limited to the exact constructions illustrated and described, because various modifications of these amazes tion intov practice within the purview of the appended claims.

Iclaim: i

1. In a fuel supply unit of the character described, a pressure regulating valve comprising a hollow casing formed with inlet, burner and bypass ports, a passageway communicating with the burner port and having an edge constituting a valve seat, a valve member adapted to be seated in said valve seat, .-'a piston slidable in the casing and carrying said valve member, a .spring normally urging said valve member intoposition in which the valve is seated inthe valve seat, a housing movable with the piston, a valve member movable in said housing, the piston, housing and valve member being formed with openings which establish communication between the interior of the casing and bypass-port when the valve member of the housing is in an open position, said housing and valve member movable therein being provided with means to establish a bleeding to the bypass port through-the said openings when the valve member in the housing is in a closed position, and a spring in the housing normally maintaining said. valve member in the housing in a closed position, said valve memher in the housing being movable against the influence of the spring under the influence of pressure of fluid in the casing.

2.' In a fuel supply unit, a pressure regulating valve comprising a casing formed with inlet, burner and bypass ports, a piston slidable in the casing and having a reduced portion centrally thereof, packing means carried by the reduced portion for sealing the piston with the casing, a valvemember carried by the reduced portion of the piston which valve member cooperates with the burner port to establish or cut off communication therethrough, the reduced portion of the piston being formed with a radially extending passage, the piston also being formed with an axially extending passage communicating with the radially extending passage, the piston also being formed with a cup-like recess into which opens the axially extending passage,

a housing received in the cup-like recess and having an end structure formed with a recess in communication with the axially extending passage'of the piston, the end structure alsov being formed with an opening establishing communication between said recess and the interior of the housing, the cylindrical walls of the housing being formed with an opening establishing communication to the bypass port, the end structure of the housing being formed with a valve seat, a valve member movable in the housing formed with a conical tip adapted to be seated in said valve seat, said tip being formed with a cross cut, the valve member having a passage extending therethrough in-communication with the cross cut, a spring in the casing normally urging the piston to affect the last mentioned valve member to cut off communication to the burner, and a spring in the housing normally urging the valve memberfln the housing to seat a conical tip in the valve seat in the end structure of the housing.

the vpiston which valve member cooperates with the burner port to establish or cut off communication therethrough, the reduced portion of the piston being formed with a radially extending passage, the piston also being formed/with an axially extending passage communicating with the radially extending passage, the piston also being formed with a cup-like recess into which opens the axially extending passage, a housing received in the cup-like recessand having an end structure formed with a recess in communication with the axially extending passage of the piston, the end structure also being formed with an opening establishing communication between said recess and the interior of the housing, the

cylindrical walls or the housing being formed with an opening establishing communication to the bypass port, the end structure of the housing being formed with a valve seat, a valve member movable in the housing formed with a conical tip adapted to-be seated in said valve seat, said tip being formed with a cross cut, the valve member having a passage extending therethrough in communication with the cross cut, a spring in the casing normally urging the piston to affect the last mentioned valve member to cut off communication to the burner, and a spring in the housing normally urging the valve member in the housing to seat a conical tip in the valve seat in the end structure of the housing, and means for varying the tension of said last mentioned spring.

4. A pressure regulating valve comprising a casing formed with an inlet, a burner, and a bypass port, said casing being formed with a bore,

a piston slidable in said bore and carrying a ,the piston'into closed position with respect to the burner port, said piston having a passageway extending through the head thereof, communicating with the interior of said sleeve, and a valve mechanism disposed interiorally of the sleeve for controlling the passage of the fluid therethrough, said sleeve being formed with openings that communicate with the bypass port.

5. A pressure regulating valve comprising a casing formed with an inlet, a burner, and a bypass port, said casing being formed with a bore, a piston slidable in said bore and carrying a valve which cooperates with the burner port controlling the flow of fluid therethrough, a closure at the end of the casing opposite from the burner port, said closure being formed with a shoulder, a sleeve carriedby the piston and movable therewith, said sleeve having a shoulder adapted to engage the shoulder on the closure to limit movement of the piston, a spring disposed about said sleeve engaging the piston at 7 one end, and the shoulder of the closureat the other to normally urge the valve that is carried 10 by the piston into closed position with respect to the burner port, said sleeve being formed with openings communicating with the bypass port and having a head which engages with the piston,

and which head is formed with passageways com- 15 municetin: with the interior thereof, the head of valve membeii in closed position, said valve minthe piston being foymed wi h pamlewey tblt bet being provided with a cut to establish a bleed, extends theretbrougb and establishes communiand mum (or adjusting the tension of said last cation mm the inlet opening to the passageweye mentioned sprint.

l in the head of the s1eeve,-a valve member slid- WALTER CZARNECKI.

able in aid sleeve, aspring normally urging said I 

